The Oneirophysic forces her will outward, an attempt at Dream Triage, but the Fairest is only an Intern. In her Desire to aid those bound in nightmares, she had taken the Plunge to enter the Dreaming. To expedite her entry, she has excluded her one skill to heal physical wounds, but this....surveying the still struggling dreamer, clawing and crying soundlessly, there was nothing physical about this.
They would need to try something else.
pg 157-158 of Lords of Summer, it says that to use the Privileges gained by Sera's Entitlement you needed to enter the Dream through meditation rather then taking the Plunge, and even if Sera had meditated Dream Triage is used to Heal physical damage, 'generally reduce the impact of life-threatening injuries, illnesses or toxins' Meaning that if used it would clear the damage from the target's right most health box, stabilizing them. What's effecting these Dreamers, is something Other.